twice as many a as b的意思是什么

1.This rope is twice longer than that one。

这根绳子是那根绳子的两倍长。

2.This hall is five times bigger than our classroom。

这个大厅比我们的教室大四倍。

3.This big stone is three times as heavy as that one。

这块大石头的重量是那块的三倍。

4.The plane flew ten times as high as the kite。

那架飞机的飞行高度是那只风筝的十倍。

5.Our factory is twice as big as theirs。

 我们的工厂是他们的三倍。

6.I have three times as many as you。

我有你三倍那么多。